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Loh ZH, Doumy G, Arnold C, Kjellsson L, Southworth SH, Al Haddad A, Kumagai Y, Tu MF, Ho PJ, March AM, Schaller RD, Bin Mohd Yusof MS, Debnath T, Simon M, Welsch R, Inhester L, Khalili K, Nanda K, Krylov AI, Moeller S, Coslovich G, Koralek J, Minitti MP, Schlotter WF, Rubensson JE, Santra R, Young L. Observation of the fastest chemical processes in the radiolysis of water. Science 2020; 367:179-182. [DOI: 10.1126/science.aaz4740] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/15/2019] [Indexed: 01/01/2023]
Abstract
Elementary processes associated with ionization of liquid water provide a framework for understanding radiation-matter interactions in chemistry and biology. Although numerous studies have been conducted on the dynamics of the hydrated electron, its partner arising from ionization of liquid water, H2O+, remains elusive. We used tunable femtosecond soft x-ray pulses from an x-ray free electron laser to reveal the dynamics of the valence hole created by strong-field ionization and to track the primary proton transfer reaction giving rise to the formation of OH. The isolated resonance associated with the valence hole (H2O+/OH) enabled straightforward detection. Molecular dynamics simulations revealed that the x-ray spectra are sensitive to structural dynamics at the ionization site. We found signatures of hydrated-electron dynamics in the x-ray spectrum.
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Affiliation(s)
- Z.-H. Loh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
| | - G. Doumy
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - C. Arnold
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Department of Physics, Universität Hamburg, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - L. Kjellsson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- European XFEL GmbH, Schenefeld, Germany
| | - S. H. Southworth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - A. Al Haddad
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - Y. Kumagai
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - M.-F. Tu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - P. J. Ho
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - A. M. March
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
| | - R. D. Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - M. S. Bin Mohd Yusof
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
| | - T. Debnath
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
| | - M. Simon
- Sorbonne Université and CNRS, Laboratoire de Chemie Physique-Matière et Rayonnement, LCPMR, F-750005 Paris, France
| | - R. Welsch
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - L. Inhester
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
| | - K. Khalili
- Department of Energy Conversion and Storage, Technical University of Denmark, Roskilde, Denmark
| | - K. Nanda
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - A. I. Krylov
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - S. Moeller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - G. Coslovich
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - J. Koralek
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - M. P. Minitti
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - W. F. Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - J.-E. Rubensson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - R. Santra
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Department of Physics, Universität Hamburg, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - L. Young
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA
- Department of Physics and James Franck Institute, University of Chicago, Chicago, IL, USA
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Gorczyca TW, Rubensson JE, Sathe C, Strom M, Agaker M, Ding D, Stranges S, Richter R, Alagia M. Radiative and relativistic effects in the decay of highly excited states in helium. Phys Rev Lett 2000; 85:1202-1205. [PMID: 10991512 DOI: 10.1103/physrevlett.85.1202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2000] [Indexed: 05/23/2023]
Abstract
A recent experimental study [J.-E. Rubensson et al., Phys. Rev. Lett. 83, 947 (1999)] measured a significant fluorescence yield of the He( 2lnl(')) photoexcited resonances, showing major qualitative differences from nonrelativistic predictions. We present a further theoretical study of these states, and perform R-matrix multichannel quantum defect theory calculations to extract fluorescence and ionization cross sections. These theoretical results are in excellent agreement with newer, higher-resolution measurements. Radiative and spin-orbit effects are quantified and shown to play an important role in the overall characterization of highly excited states.
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Affiliation(s)
- TW Gorczyca
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008-5151, USA
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